Implement for laying out miters and octagons.



I No. 821,094.

PATENTED MAY 22, 19%.

P. L. FOX.

IMPLEMENT FOR LAYING OUT MITERS AND OGTAGONS.

APPLICATION FILED JAN. 15, 1906.

INVENTOR WITNESSES ATTORNEY PATENT @FFTCE.

PHILO L. FOX, OF BRIDGEPORT, CONNECTICUT.

IMPLEMENT FOR LAYING OUT MITERS AND OCTAGONS.

Specification of Letters Patent.

Patented May 22, 1906.

Application filed January 15, 1906. Serial No. 296,048.

To all whom it may concern.-

Be it known that I, PHILo L. FOX, a citizen of the United States,residing at Bridgeport, in the county of Fairfield, State ofConnecticut, have invented a new and useful Implement for Laying OutMiters and Octagons, of which the following is a specification.

This invention has for its object to provide a simple, inexpensive, andcompact implement consisting, essentially, of a sliding blade and anadjustable handle for laying out miters and octagons, so calledthat is,figures having sides at angles of forty-five and sixtyseven and one-halfdegrees, respec tively, to a base-line. With these ends in view I havedevised the simple and novel implement, of which the followingdescription, in connection with the accompanying drawings, is aspecification, reference characters being used to indicate the severalparts.

Figure 1 is a plan view illustrating the use of my-novel implement inlaying out a miterthat is, a line at an angle of forty-five degrees to abase-line; Fig. 2, a plan view with the handle partly broken away,illustrating the use of the implement in laying out an octagon-that is,a line atan angle of sixty-seven and one-half degrees to a base-line, orone side of an eight-sided figure; and Fig. 3 is a section on the line 33 in Fig. 1.

My novel implement comprises a blade 10, having a longitudinal slot 11,a triangular handle 12, in which the blade is adjustable longitudinally,and means for locking the blade to the handle after adjustment.

13 denotes the base of the handle. The essential feature of the handleis that it is provided with a miter face 14 and an octagon face 15thatis to say, with a face 14 lying at an angle of forty-five-degrees to thebase 13 and with a face 15 lying at an angle of sixty-seven and one-halfdegrees to the base. At the angle of the handle formed by theintersection of the miter face and the octagon face is a slot 16, lyingintermediate the sides of the handle and parallel therewith. This slotreceives the blade, the edge of the blade resting against the bottom ofthe slot, which is parallel with the base 13 of the handle, so that theedges of the blade will lie at an angle of forty-five and sixty-sevenand one-half degrees, respectively, to the miter and octagon faces ofthe handle.

17 denotes a hole in the handle which intersects slot 16 at right anglesto the base of said slot and extends from the outer face or faces of thehandle to an opening 18 therein, the wall of said opening contiguous toslot 16 lying parallel with the bottom of said slot.

19 denotes a locking-rod, which is threaded at one end, as at 20, is cutaway on one side, as at 21, to receive the portion of the blade belowthe slot, and is provided at the end. opposite to the thread with anundercut head 22, which is adapted to be passed through the slot in theblade, the undercut face of the head then engaging the lower wall of theslot in the blade.

23 denotes a knurled nut which engages the threaded end of thelocking-rod. and the inner face of which bears against the wall ofopening 18 in the handle, so that when the nut is tightened up againstthe wall of the opening the blade will be drawn inward, the lower edgeof the blade engaging the bottom of the slot, and thus locking the bladesecurely in place.

1 The operation will be readily understood from the drawings. WVhen theimplement is to be used in laying out a miterthat is, inclicating a lineat an angle of forty-five degrees to a baselineit is simply required tolay the miter face 14 of the handle against a baseline, as indicated inFig. 1, in which the line of a base is indicated by a dotted line. Bothedges of the blade will then lie at an angle of forty-five degrees tothe base-line. For a longer or shorter miter the blade may be ad-'justed to any convenient position by simply loosening the nut slightly,which will unlock the blade and permit it to be moved in eitherdirection freely. WVhen in the desired position, it is locked there bytightening up the nut again.

For laying out an octagon angle-that is, an angle of sixtyseven andone-half degrees to a base-lineor one side of an eight-sided figure theoperation is precisely the same, except that the octagon face 15 of thehandle is laid against the base-line, as clearly indicated in Fig. 2.Both edges of the blade will then lie at an angle of sixty-seven andonehalf degrees to the base-line.

Having thus described my invention, I claim 1. An implement for layingout miters and octagons comprising a handle having a base, a face at anangle of forty-five degrees thereto, and an octagon face at an angle ofsixty seven and one-half degrees to said base, and

at the intersection of said faces a slot lying parallel with the sidesand the bottom of which is parallel with the base of the handle, a bladein said slot and means for securing the blade at any desiredlongitudinal adjustment.

2. An implement for laying out miters and octagons comprisin a handlehaving a base, a face at an angle of forty-five degrees thereto, and anoctagon face, at an angle of sixtyseven and one-half degrees to saidbase, and at the intersection of said faces a slot lying parallel withthe sides and the bottom of which is parallel with the base of thehandle, a blade in said slot itself provided with a longitudinal slot, alocking-rod in the handle having a head engaging the wall of the slot inthe blade and a nut whereby the blade is locked in place.

3. An implement for laying out miters and octagons comprising a handlehaving a base, a face at an angle of forty-five degrees there to, and anoctagon face, at an angle of sixtyseven and one-half degrees to saidbase, and at the intersection of said faces a slot lying parallel withthe sides and the bottom of which is parallel with the base of thehandle, a blade in said slot itself provided with a longitudinal slot,and a locking-rod threaded at one end, cut away on one side to receivethe portion of the-blade below the slot and having an undercut headengaging the slot, and

a nut on said rod by which the blade is locked in place.

4. An implement for laying out miters and octagons comprising a handlehaving a base, a face at an angle of forty-five degrees thereto, and anoctagon face at an angle of sixtyseven and one-half degrees to saidbase, at the intersection of said faces a slot lying parallel with thesides, and the bottom of which is parallel with the base of the handle,an opening in the handle having a wall parallel with the bottom of theslot, and a hole intersecting the slot and the opening at right anglesthereto, a slotted blade in the slot in the handle, a locking-rod in thehole having an undercut head engaging the slot in the blade, and a nuton the rod adapted to bear against the wall of the opening to lock theblades at any desired adjustment.

5. The combination with a handle comprising a base and faces at anglesthereto of forty-five and 'sixty-seven and one-half degreesrespectively, of a blade and means for adjustably securing the blade tothe handle at an angle of forty-five and sixty-seven and one-halfdegrees to the faces respectively.

In testimony whereof I affix my signature in presence of two witnesses.

PHILO FOX.

Witnesses:

A. M. WOOSTER, S. W. ATHERTON.

